90178120

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{13831}}^1$

素因数の和:14005

約数の個数: 32

約数和(自身を含む): 204160320

約数和(自身を除く): 113982200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 3260, 6520, 13831, 27662, 55324, 69155, 110648, 138310, 276620, 553240, 2254453, 4508906, 9017812, 11272265, 18035624, 22544530, 45089060, 90178120]

約数ペア:

[(1, 90178120), (2, 45089060), (4, 22544530), (5, 18035624), (8, 11272265), (10, 9017812), (20, 4508906), (40, 2254453), (163, 553240), (326, 276620), (652, 138310), (815, 110648), (1304, 69155), (1630, 55324), (3260, 27662), (6520, 13831)]